Amazing mammals in evolutionary history of animals

BEIJING, April 6(Xinhuanet) -- In the evolutionary history of animals, mammals occupy a very important position.

Saber-Toothed Cat (Photo Source: www.xinhuanet.com)

Recently, an amazing exhibition named “Extreme Mammals: the Biggest, Smallest, and Most Amazing Mammals of All Time” is held by California Academy of Sciences in San Francisco.

It is a pity that most of those mammals which were displayed at the exhibition have already died out. Following are some of those fantastic mammals.

Indricotherium (Photo Source: www.xinhuanet.com)